We’ve unveiled two powerful new platform capabilities: Automated Workload Rightsizing and PrecisionPack

Karpenter vs. CAST AI K8s Automation Platform

Compare two Kubernetes optimization solutions to find out which one is a better fit for your business.

Avoid manual work, with CAST AI you can start saving in 5 minutes. Leverage the all-in-one platform features including cluster security and monitoring.

CAST AI vs. Karpenter at a glance

Fast optimization, automated Kubernetes cost reduction, monitoring, and security.
  • An automated cost management platform tailored for Kubernetes that works with all three major cloud providers.
  • Automated optimization features reduce cloud costs by 63% on average, with minimal configuration effort.
Open-source, automated node provisioning and deprovisioning.
  • A tool for improving the efficiency and cost of running workloads on Kubernetes clusters, supports only Amazon EKS.
  • Karpenter provisions and optimizes nodes automatically, removing them when no longer needed. However, it requires time-consuming configuration to make it work right.

CAST AI vs. Karpenter: quick feature comparison

Use the comparison table below to discover what makes CAST AI different.

Feature CAST AI Karpenter
Vendor support
Google Cloud
Microsoft Azure
Autoscaling features
Unscheduled Pod policy
Bin packing pods
Delete Empty Node policy
Optimized pod grouping
Spot instance support
Ultra-fast scaling
Observability features
Cost monitoring
Security insights
Easy setup & maintenance
5-minute setup
Dedicated 24/7 customer support
Upcoming feature roadmap
Uptime SLA

Branch.io: Millions of Dollars Saved on Amazon EKS & kOps

“Cost optimization with CAST AI has been a big success for Branch, saving us millions of dollars annually while maintaining our reliability SLAs. The modest amount of effort by our team makes this one of the highest ROI cloud cost savings initiatives we’ve done.”

Mark Weiler

Senior VP of Engineering

Complete your PoC in days, not months

Proving something works should not take months. CAST AI starts saving the moment you onboard. Complete your Proof of Concept in 5 days and get an ROI report to prove results.

Average savings:


CAST AI manages your cloud resources automatically. No upfront payments or manual tracking and fiddling.


Operations count


Clusters connected


Supported regions


Distinct instance types

Features your K8s cluster will love

Free features

No credit card required. Unlimited clusters.

Cloud cost monitoring

View your cloud costs in one place, monitor them in real time, and understand where exactly they come from.

Container security

Get all the key cloud security insights in one place, prioritize configuration issues and vulnerabilities, and share your findings easily.

Premium Kubernetes automation
Advanced autoscaling

Depending on your workload’s needs, CAST AI adds and removes resources necessary to ensure top performance at the best price.

Instant rebalancing

Analyze and optimize your cluster automatically to enjoy improved performance at a far lower cost.

Spot instance automation

Save even 90% with spot instance automation – and have your workloads moved automatically upon their termination.

Automatic rightsizing

CAST AI automatically selects the resources your workload needs, eliminating the risk of under and overprovisioning.

Immediate relief for your cloud spend

CAST AI reduces your cloud costs without requiring hours of engineer time to set things up. You will get the first savings within an hour of enabling automation.

Fair and straightforward pricing

CAST AI bills you for the number of CPUs, not the savings amount. Without extra charges for cost optimization, monitoring, or security features.

Effortless implementation

Connect your clusters, set policies, and turn automated optimization on to have CAST AI take care of Kubernetes deployment 24/7.

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Optimize your cluster for free

Try powerful Kubernetes automation features combined with full cost visibility via cluster-specific savings reports and cost monitoring.

No card required

Unlimited clusters

Instant savings insights